Is it reliable to stick explosion-proof film on more than 50 places when a man in Hangzhou took a shower when his glass burst？
A month ago, when Mr. Xu of Xiaoshan was taking a bath, the tempered glass in the bathroom suddenly burst. He was cut by glass crumbs, covered in blood, with more than 50 wounds, large and small, and more than 20 stitches.
This news caused a heated discussion among readers. Many readers have left messages, and they have experienced such a terrible experience, and the tempered glass burst without warning.
@ It’s dawn at five o’clock: My family is the same. The children in Grade One got five stitches in their knees. At that time, blood and fountains burst out, and the mother and son were scared to death.
@ Miss Little Face Cat: When I was taking a shower, the glass in the bathroom exploded. Fortunately, there were only a few small holes. I am a girl, and I am still scared when I think about it. Now I bought a waterproof curtain for the broken one in the bathroom, and I dare not install it.
@ Lin: The glass of my shower door was blown up before, but fortunately there was no one in the bathroom.
@ Meng Xiaoyan: Our family also exploded. Fortunately, I just washed my daughter’s face in the washbasin next to it.
@ 嗭嗭嗭嗭: The problem of self-explosion of tempered film in the comment area is indeed serious, not a small probability! The year before last, the toughened film on my balcony blew itself up. Fortunately, people were not on the balcony! The other day, the tempered film in the bathroom exploded again, but fortunately it was not there. It was terrible. It exploded all over the place!
Speaking of the bursting of tempered glass, @ Netizen Tu Tu still has a lingering fear. "At that time, our two children were only over one year old. I took a bath at night and washed Xiaobao before I went to wash." Tu Tu said, "Suddenly, I slammed my back and turned around. My head was stunned and buzzing. When I reacted, glass slag splashed everywhere. There were small wounds on my hands and back and blood everywhere."
Tu Tu said, but fortunately, it was himself who took a bath, not a child. If Xiaobao was scratched by the glass, he would feel even more distressed.
After that, Tu Tu’s husband put films on both sides of the bathroom glass. "It doesn’t matter whether it looks good or not, and safety matters."
@ 京京京京京 also experienced the bursting of tempered glass in the bathroom. "Fortunately, there is no one at home. After that, the glass door is no longer installed at home and a waterproof curtain is put on."
Why does tempered glass explode itself? What is the probability?
The simplest theoretical explanation is: thermal expansion and thermal contraction.
Tempered glass is not glass with iron added, but made of ordinary glass after heat treatment and cooling. Generally, tempered glass is 4-6 times stronger than ordinary glass, so it is called "steel".
Compared with ordinary glass, after ordinary glass is broken, it will produce large sharp flaky fragments; Cracks in tempered glass will form obtuse-angled particles similar to honeycomb, which is relatively safer.
However, it does not mean that it is completely safe.
The Institute of Physics, Chinese Academy of Sciences has done a popular science: under certain conditions, such as a sudden drop in temperature, tempered glass may explode itself, because the phase transition of nickel sulfide in the glass makes the volume expansion stress of tempered glass unbalanced, which leads to explosion.
Of course, the composition of tempered glass is more complicated. We have checked the information, and there is also an explanation that it is caused by simple silicon, and it may also be caused by visible defects such as stones, sand, bubbles, gaps and scratches.
The data show that the self-explosion rate of ordinary tempered glass is 0.1— 0.3%。 In other words, 1 to 3 households in 1000 households have the probability of explosion.
Every family has a shower room. How to eliminate this potential safety hazard?
In addition to talking about their own experiences, netizens have also made online suggestions.
@ Zhang Yong: The shower glass must be affixed with explosion-proof film! The self-explosion of tempered glass is an inherent characteristic of tempered glass, which is unpredictable. Even products that meet the national 3 certification will have the risk probability of self-explosion. Remember, the shower glass must be affixed with explosion-proof film!
@ Wu Qinghua: The bathroom should be installed with double-sided laminated glass. Even if one piece of glass is exposed, another piece is good. Because there is a layer of glue in the middle, glass slag will not fly around after exposure.
@ Lao Niu: Explosion-proof film should be attached. I posted the shower room in my house when it was delivered. We must nip in the bud. @ inch grass heart: My shower room burst in the middle of the night, but fortunately, people are fine. Use tempered glass must film, it is safer to use double-layer tempered glass, if it is too expensive, waterproof curtain!
Is the film useful?
In the reader’s message, we will synthesize everyone’s opinions:
For those under renovation, choose double glass; If it has been renovated, quickly film it; If it is too expensive, use waterproof curtains.
Film pasting, is it reliable? The suggestion given by the Institute of Physics, Chinese Academy of Sciences: Post it! The most important thing is to determine whether the tempered glass is coated with an explosion-proof film. The safety explosion-proof film is generally a high-performance polyester film, which will make the self-exploding particles stick to the film without injuring people.
On the online shopping platform, the price of explosion-proof films ranges from several pieces to tens of yuan. According to the size of the area, various glass films have the functions of anti-collision, explosion-proof, waterproof and moisture-proof.
Tempered glass coated with the film may also burst, but the self-exploding glass particles will stick to the film. Relatively speaking, the chance of broken glass hurting people will be greatly reduced.
Of course, the best way to prevent tempered glass from bursting and hurting people is to use waterproof curtain cloth and wooden door instead of tempered glass, which will be much safer.